Nail structure

ABSTRACT

A nail structure has a wall nail casing and a hammer nail. The center of the wall nail casing is formed with a tapered central axial hole. In manufacturing the wall nail casing, an interior and a distal end of a mold for forming the wall nail casing are installed coaxial pins. When the wall nail casing is formed, two ends of the nail body are supported by coaxial pins; and thus the central axial hole will not shift. When the wall nail casing is formed, the distal end thereof is exactly formed with a though hole which is communicated with the central axial hole. When the hammer nail is beaten into the central axial hole of the wall nail casing, the hammer nail expands the central axial hole outwards to prevent the hammer nail from colliding the distal end of the wall nail casing.

FIELD OF THE INVENTION

[0001] The present invention relates to nail structure, and particularlyto nail structure having a wall nail casing and a hammer nail, whereinwhen the hammer nail is beaten into the central axial hole of the wallnail casing, the hammer nail expands the central axial hole outwards toprevent the hammer nail from colliding the distal end of the wall nailcasing.

BACKGROUND OF THE INVENTION

[0002] Referring to FIGS. 1 and 2, a prior art nail structure isillustrated. A wall nail casing 3 is fixed to a wall and a hammer nail 4which is beaten into the wall nail casing 3. A center of the wall nailcasing 3 is formed with a tapered central axial hole 31 which is reducedto the distal end thereof. When the hammer nail 4 is beaten into thecentral axial hole 31, the hammer nail 4 will expand the central axialhole 31 of the wall nail casing 3 so as to be embedded into the centralaxial hole 31. However, this prior art wall nail casing has thefollowing disadvantages:

[0003] The central point can not be corrected: In manufacturing the wallnail casing 3, the mold of the manufacturing the wall nail casing, acoaxial pin shorter than the length of the wall nail casing is insertedinto the mold. When forming the wall nail casing, since the wall nailcasing is a long tube, as pressing the wall nail casing, an overlargepressure on the central axial hole 31 will shift when the coaxial pin istilt so that the central axial hole of the wall nail casing can not bealigned to the central axis itself. Thereby, the hammer nail is buckledin the inner side of the wall nail casing, and thus it can not besuccessfully to beaten the hammer nail into the wall nail casing, asillustrated in FIG. 2.

[0004] The hammer nail is easily deformed: Since in the prior art, onlyone coaxial pin is inserted into the wall nail casing 3, and the pin isshorted than the wall nail casing. Thus the distal end 32 of the wallnail casing is closed. When the hammer nail 4 applies a force to thewall nail casing 3 so that the outer side of the hammer nail 4 isextruded into the central axial hole 31. Since the distal end 32 isclosed, the expanding force is non-uniform and therefore, the pull forceis insufficient. It becomes difficult to expand the central axial hole31 of the wall nail casing. Thereby, it is easy that the tip of thehammer nail 4 will deform as it is beaten into the wall nail casing.Thus the hammer nail 4 has insufficient pull force and thus the functionthereof is reduced.

[0005] The edge of the hammer nail 4 is not smooth: the tip 41 of theprior art hammer nail 4 is not smooth and thus is formed as uneven edge411 which will rub the inner edge of the wall nail casing. Thereby, theouter diameter of the wall nail casing becomes coarse and can not beinserted into the wall.

SUMMARY OF THE INVENTION

[0006] Accordingly the primary object of the present invention is toprovide a nail structure which has a wall nail casing and a hammer nail.The center of the wall nail casing is formed with a tapered centralaxial hole. In manufacturing the wall nail casing, an interior and adistal end of a mold for forming the wall nail casing are installedcoaxial pins. When the wall nail casing is formed, two ends of the nailbody are supported by coaxial pins; and thus the central axial hole willnot shift. When the wall nail casing is formed, the distal end thereofis exactly formed with a though hole which is communicated with thecentral axial hole so that the whole wall nail casing is hollowed andthe distal end is formed as a round inner tapered hole. When the hammernail is beaten into the central axial hole of the wall nail casing, thehammer nail expands the central axial hole outwards to prevent thehammer nail from colliding the distal end of the wall nail casing.

[0007] The various objects and advantages of the present invention willbe more readily understood from the following detailed description whenread in conjunction with the appended drawing.

BRIEF DESCRIPTION OF THE DRAWINGS

[0008]FIG. 1 is a plane exploded perspective view of a prior art wallnail casing.

[0009]FIG. 2 is a plane assembled view of the prior art wall nailcasing.

[0010]FIG. 3 is an exploded perspective view of the present invention.

[0011]FIG. 3A is a cross section view of the wall nail casing of thepresent invention.

[0012]FIG. 4 is an assembled view of the present invention.

[0013]FIG. 5 is an assembled perspective view of the present invention.

[0014]FIG. 6 is a plane assembled view of the wall nail casing of thepresent invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0015] Referring to FIGS. 3 and 4, the structure of the presentinvention is illustrated. The present invention is formed by a wall nailcasing 1 and a hammer nail 2 which is beaten into the wall nail casing1.

[0016] A center of the wall nail casing 1 is formed with a taperedcentral axial hole 11. Two sides of the distal end of the wall nailcasing 1 are formed with a slot 12. In manufacturing the wall nailcasing 1, interior and distal end of the mold are installed coaxialpins. When the wall nail casing 1 is formed, two ends of the nail bodyare supported by coaxial pins. The central axial hole 11 will not shift.Thereby, the central axial hole 11 of the wall nail casing 1 can correctthe central axis itself. When the wall nail casing 1 is formed, thedistal end thereof is exactly formed with a though hole 13 communicatedwith the central axial hole 11 so that the whole wall nail casing 1 ishollowed and the distal end is formed as a round inner tapered hole.

[0017] A front edge of the central axial hole 11 of the wall nail casing1 is a round tapered inlet 111. A distal end 21 of the hammer nail 2 hasa round tapered shape. Thereby, the hammer nail 2 can successfully passthrough the inlet 111 of the wall nail casing 1.

[0018] An inner edge of the central axial hole 11 of the wall nailcasing 1 is formed with a plurality of semi-round enhancing ribs 112. Afront end of each enhancing rib 112 is reduced toward the edge of thecentral axial hole 11. Thereby, the hammer nail 2 can be placed thereinsuccessfully. Therefore, the hammer nail 2 is positioned at the inlet111 of the wall nail casing 1. The distal end of the wall nail casing 1is not expanded by the hammer nail 2. Thus the hammer nail 2 and wallnail casing 1 are inserted into a drill hole of a wall. The function ofthe enhancing ribs 112 causes that the hammer nail 2 will not expand andthus not to break the wall of the hammer nail 2.

[0019] Thereby, when a force is applied to the hammer nail 2, hammernail 2 is beaten into the central axial hole 11 of the wall nail casing1. Since the whole wall nail casing 1 is hollowed, the hammer nail 2 canexpand the central axial hole 11 outwards to prevent the hammer nail 2from colliding the distal end of the wall nail casing 1 which is notexpanded outwards. Thus, the hammer nail 2 is aligned to a center pointto prevent the deformation of the hammer nail 2.

[0020] Although the present invention has been described with referenceto the preferred embodiments, it will be understood that the inventionis not limited to the details described thereof. Various substitutionsand modifications have been suggested in the foregoing description, andothers will occur to those of ordinary skill in the art. Therefore, allsuch substitutions and modifications are intended to be embraced withinthe scope of the invention as defined in the appended claims.

What is claimed is:
 1. A nail structure having a wall nail casing and ahammer nail capable of being beaten into the wall nail casing; wherein acenter of the wall nail casing is formed with a tapered central axialhole which is reduced toward a distal end thereof; two sides of thedistal end of the wall nail casing are formed with respective slots;characterized in that: in manufacturing the wall nail casing, aninterior and a distal end of a mold for forming the wall nail casing areinstalled coaxial pins; when the wall nail casing is formed, two ends ofthe nail body are supported by coaxial pins; the central axial hole willnot shift; thereby, a center axis of the central axial hole of the wallnail casing can be corrected; when the wall nail casing is formed, thedistal end thereof is exactly formed with a though hole which iscommunicated with the central axial hole so that the whole wall nailcasing is hollowed and the distal end is formed as a round inner taperedhole; wherein when the hammer nail is beaten into the central axial holeof the wall nail casing, the hammer nail expands the central axial holeoutwards to prevent the hammer nail from colliding the distal end of thewall nail casing which is not expanded outwards; and thus, the hammernail is aligned to a center point to prevent the deformation of thehammer nail.
 2. The nail structure as claim in claim 1, wherein a frontedge of the central axial hole of the wall nail casing is a roundtapered inlet; a distal end of the hammer nail has a round taperedshape; thereby, the hammer nail successfully passes through an inlet ofthe wall nail casing.
 3. The nail structure as claim in claim 1, whereinan inner edge of the central axial hole of the wall nail casing isformed with a plurality of semi-round enhancing ribs; a front end ofeach enhancing rib is reduced toward one edge of the central axial hole;thereby, the hammer nail is placed therein successfully; wherein thehammer nail is positioned at an inlet of the wall nail casing; thedistal end of the wall nail casing is not expanded by the hammer nail;thus the hammer nail and wall nail casing are inserted into a drill holeof a wall successfully.